Initial commit

target/linux/ath79/image/lzma-loader/src/Makefile

@@ -0,0 +1,113 @@
+#
+# Makefile for the LZMA compressed kernel loader for
+# Atheros AR7XXX/AR9XXX based boards
+#
+# Copyright (C) 2011 Gabor Juhos <juhosg@openwrt.org>
+#
+# Some parts of this file was based on the OpenWrt specific lzma-loader
+# for the BCM47xx and ADM5120 based boards:
+#	Copyright (C) 2004 Manuel Novoa III (mjn3@codepoet.org)
+#	Copyright (C) 2005 Mineharu Takahara <mtakahar@yahoo.com>
+#	Copyright (C) 2005 by Oleg I. Vdovikin <oleg@cs.msu.su>
+#
+# This program is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License version 2 as published
+# by the Free Software Foundation.
+#
+
+LOADADDR	:=
+LZMA_TEXT_START	:= 0x80a00000
+LOADER_DATA	:=
+KERNEL_MAGIC	:=
+BOARD		:=
+FLASH_OFFS	:=
+FLASH_MAX	:=
+
+CC		:= $(CROSS_COMPILE)gcc
+LD		:= $(CROSS_COMPILE)ld
+OBJCOPY		:= $(CROSS_COMPILE)objcopy
+OBJDUMP		:= $(CROSS_COMPILE)objdump
+
+BIN_FLAGS	:= -O binary -R .reginfo -R .note -R .comment -R .mdebug \
+		   -R .MIPS.abiflags -S
+
+CFLAGS		= -D__KERNEL__ -Wall -Wstrict-prototypes -Wno-trigraphs -Os \
+		  -fno-strict-aliasing -fno-common -fomit-frame-pointer -G 0 \
+		  -mno-abicalls -fno-pic -ffunction-sections -pipe -mlong-calls \
+		  -fno-common -ffreestanding -fhonour-copts -nostartfiles \
+		  -mabi=32 -march=mips32r2 \
+		  -Wa,-32 -Wa,-march=mips32r2 -Wa,-mips32r2 -Wa,--trap
+CFLAGS		+= -D_LZMA_PROB32
+CFLAGS		+= -flto
+
+ASFLAGS		= $(CFLAGS) -D__ASSEMBLY__
+
+LDFLAGS		= -static -Wl,--gc-sections -Wl,-no-warn-mismatch
+LDFLAGS		+= -Wl,-e,startup -T loader.lds -Wl,-Ttext,$(LZMA_TEXT_START)
+LDFLAGS		+= -flto -fwhole-program
+
+O_FORMAT 	= $(shell $(OBJDUMP) -i | head -2 | grep elf32)
+
+OBJECTS		:= head.o loader.o cache.o board.o printf.o LzmaDecode.o
+
+ifneq ($(strip $(LOADER_DATA)),)
+OBJECTS		+= data.o
+CFLAGS		+= -DLZMA_WRAPPER=1 -DLOADADDR=$(LOADADDR)
+endif
+
+ifneq ($(strip $(KERNEL_MAGIC)),)
+CFLAGS		+= -DCONFIG_KERNEL_MAGIC=$(KERNEL_MAGIC)
+endif
+
+ifneq ($(strip $(KERNEL_CMDLINE)),)
+CFLAGS		+= -DCONFIG_KERNEL_CMDLINE='"$(KERNEL_CMDLINE)"'
+endif
+
+ifneq ($(strip $(FLASH_OFFS)),)
+CFLAGS		+= -DCONFIG_FLASH_OFFS=$(FLASH_OFFS)
+endif
+
+ifneq ($(strip $(FLASH_MAX)),)
+CFLAGS		+= -DCONFIG_FLASH_MAX=$(FLASH_MAX)
+endif
+
+BOARD_DEF := $(shell echo $(strip $(BOARD)) | tr a-z A-Z | tr - _)
+ifneq ($(BOARD_DEF),)
+CFLAGS		+= -DCONFIG_BOARD_$(BOARD_DEF)
+endif
+
+all: loader.elf
+
+# Don't build dependencies, this may die if $(CC) isn't gcc
+dep:
+
+install:
+
+%.o : %.c
+	$(CC) $(CFLAGS) -c -o $@ $<
+
+%.o : %.S
+	$(CC) $(ASFLAGS) -c -o $@ $<
+
+data.o: $(LOADER_DATA)
+	$(LD) -r -b binary --oformat $(O_FORMAT) -T lzma-data.lds -o $@ $<
+
+loader: $(OBJECTS)
+	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(OBJECTS)
+
+loader.bin: loader
+	$(OBJCOPY) $(BIN_FLAGS) $< $@
+
+loader2.o: loader.bin
+	$(LD) -r -b binary --oformat $(O_FORMAT) -o $@ $<
+
+loader.elf: loader2.o
+	$(LD) -z max-page-size=0x1000 -e startup -T loader2.lds -Ttext $(LOADADDR) -o $@ $<
+
+mrproper: clean
+
+clean:
+	rm -f loader *.elf *.bin *.o
+
+
+